![500ml Soft Flask by Proviz with bite valve and locking lid for leak proof storage and transport](http://visiblerunnerco.com/cdn/shop/products/ProvizSoftFlaskFullBottleHorizontalView1000x1000px.jpg?v=1670470923&width=1000)
![500ml Soft Flask by Proviz with bite valve and locking lid for leak proof storage and transport](http://visiblerunnerco.com/cdn/shop/products/ProvizSoftFlaskHeldInHand1000x1000px.jpg?v=1670470923&width=1000)
![500ml Soft Flask by Proviz with bite valve and locking lid for leak proof storage and transport](http://visiblerunnerco.com/cdn/shop/products/ProvizSoftFlaskLidSideView1000x1000px.jpg?v=1670470923&width=1000)
![500ml Soft Flask by Proviz with bite valve and locking lid for leak proof storage and transport](http://visiblerunnerco.com/cdn/shop/products/ProvizSoftFlaskPushPullLockOpen1000x1000px.jpg?v=1670470923&width=1000)
![500ml Soft Flask by Proviz with bite valve and locking lid for leak proof storage and transport](http://visiblerunnerco.com/cdn/shop/products/ProvizSoftFlaskPushPullLockClosed1000x1000px.jpg?v=1670470923&width=1000)
![500ml Soft Flask by Proviz with bite valve and locking lid for leak proof storage and transport](http://visiblerunnerco.com/cdn/shop/products/ProvizSoftFlaskLidTopView1000x1000px.jpg?v=1670470923&width=1000)
![500ml Soft Flask by Proviz with bite valve and locking lid for leak proof storage and transport](http://visiblerunnerco.com/cdn/shop/products/ProvizSoftFlaskBiteValveOpen1000x1000px.jpg?v=1670470918&width=1000)
500ml Soft Flask by Proviz
Quantity:
- Hydration Soft Flask with 500ml Capacity
- Locking top via push/pull means no leaks
- Bite valve to stop flask leaking when not locked
- Wide opening to enable easy filling, including ice
why we love our 500ml Soft Flask by Proviz
![500ml Soft Flask by Proviz with bite valve and locking lid for leak proof storage and transport](http://visiblerunnerco.com/cdn/shop/files/Proviz_Soft_Flask_500ml_lock_valve_open_Detail.jpg?v=1668575357&width=200)
Lock Valve
Push/Pull Lock/Unlock valve to ensure no leaks in transit
![500ml Soft Flask by Proviz with bite valve and locking lid for leak proof storage and transport](http://visiblerunnerco.com/cdn/shop/files/Proviz_Soft_Flask_500ml_Bite_Valve_Open_Detail.jpg?v=1668575357&width=200)
Bite Valve
Soft silicone bite valve to ensure no leaks whilst running when bottle not locked.